What are interrupts?, Operating System

Assignment Help:

What are interrupts?

Interrupts are in some ways the mainly "famous" system resources, ever since almost everyone who's used a computer has heard of them even if they don't know what they are. An interrupt is essentially what it sounds like a message from one part of the computer to another (normally to the system processor) that tells it that it needs to stop what it is doing and perform something else instead. An IRQ is an interrupt request as well as is the name for the actual signal that is used when peripheral requests can interrupt of the processor.

Interrupts play a major role in how the processor performs input/output processing and interfaces with every peripheral in the computer from the mouse and keyboard to the hard disk and modem

The processor is a highly-tuned mechanism that is designed to (basically) do one thing at a time. Though we use our computers in a way that requires the processor to at least appear to do many things at once, if you have ever used a multitasking operating system like Windows 95, you've completed this; you may possibly have been editing a document while downloading information on your modem and listening to a CD simultaneously. The processor is capable to do this by sharing its time among the various programs it is running and the different devices that need its attention. It merely appears that the processor is doing many things at once because of the blindingly high speed that it is able to switch between tasks.

 


Related Discussions:- What are interrupts?

File system, what are disadvantages of using single directory

what are disadvantages of using single directory

Define a public key encryption system, Define a public key encryption syste...

Define a public key encryption system Allows just the correct receiver to decode the data

What are the objectives and functions of operating system, What are the obj...

What are the objectives and functions of operating system? Functions of operating systems 1.      It allocates the resources and acts as a supervisor. 2.      It hides th

Inter-process Communication !, My code it didn''t run properly ,i tried to ...

My code it didn''t run properly ,i tried to pass 2 parameter example : ./a.out ls -ll ,but it execute only the ls instead of the ls -ll ! plz help amd thank you ! #include #inclu

Paging, Paging full question

Paging full question

Explain acyclic graph directories and its implementation, Acyclic Graph Dir...

Acyclic Graph Directories In this kind of directory structure the shared directories or files can exist in the file system in two or more places at once. A tree structure excl

Unsafe state, discuss unsafe state in operating system

discuss unsafe state in operating system

Define race condition, Define race condition. When various process acce...

Define race condition. When various process access and manipulate similar data concurrently, then the outcome of the execution depends on certain order in which the access take

What is starvation?, What is starvation? A main problem related to dead...

What is starvation? A main problem related to deadlock is starvation. Starvation is the circumstances where process waits indefinitely within the semaphore. Indefinite blocking

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd